<template>
  <div class="mui-numbox" data-numbox-min="1">
    <button class="mui-btn mui-btn-numbox-minus" type="button">-</button>
    <input
      id="test"
      class="mui-input-numbox"
      type="number"
      :value="initcount"
      @change="countChanged"
      ref="numbox"
      readonly
    />
    <button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
  </div>
</template>
<script>
  import mui from '../../lib/mui/js/mui.min.js'
  export default {
    mounted() {
      //加载完成的生命周期
      //初始化数字选择框
      mui('.mui-numbox').numbox()
    },
    methods: {
      countChanged() {
        //数量变了，每当数量改变，将最新的数据同步到购物车的 store中，覆盖原有数据
        this.$store.commit('updateGoodsInfo', {
          id: this.goodsid,
          count: this.$refs.numbox.value,
        })
      },
    },
    props: ['initcount', 'goodsid'],
  }
</script>
<style lang="less" scoped>
  .mui-numbox {
    height: 20px;
    width: 64px;
    padding: 0 20px;
    margin: 0 2px;
    button {
      width: 20px;
    }
  }
</style>